code: def main(argv):
      del argv
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import math
  from absl import app
  import numpy
  import scipy
  import sympy
  import core
label_desc: Use image node_id 21 for calling a global function with example usage: main(argv) without return types